Finding the Fourth Proportional to 189,203.80, 260,964.02 and 128,666.84
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Solution
The fourth proportional to 189,203.80, 260,964.02 and 128,666.84 is: 177,466.92
Step by Step Solution
- Step 1: Write the proportion equation
189,203.80 : 260,964.02 = 128,666.84 : x - Step 2: Convert to fraction form
189,203.80/260,964.02 = 128,666.84/x - Step 3: Cross multiply
189,203.80x = 260,964.02 × 128,666.84 - Step 4: Simplify right side
189,203.80x = 33,577,415,807.10 - Step 5: Solve for x
x = 33,577,415,807.10/189,203.80 - Step 6: Final answer
x = 177,466.92
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.